tolong dong kaaa, nanti maau dikumpulin, please kaaaa

1.
5/(2 + 2akar2) x (2 - 2akar2)/(2 - 2akar2)
= (10 - 10 akar2)/-4
= (-5 + 5akar2)/2

2.
4/akar6 x akar6/akar6
= 4akar6/6
= 2akar6/3

Bab Bilangan Irrasional
Matematika SMP Kelas IX

1] 5/(2 + 2√2)
= 5 (2 - 2√2)/(2² - (2√2)²)
= (10 - 10√2)/(4 - 8)
= (10 - 10√2)/(-4)
= (5√2 - 5)/2

2] 4/√6 = (4 . √6)/√6² = (4/6)√6 = (2/3) √6